Tool



E. A. RANDALL ET AL TOOL June 7, 1949. 2,472,124

Filed July 15, 1945 INVENTORS. VERNON B. 51.1mm, 8: EoMu/uo A. RANDALL.

ATTORNEY Patented June 7, 1949 UNITED STATES PATENT OFFICE 2,472,124 TOOL Edmund A. Randall and Vernon B. Slifer, New York, N. Y. Application July 13, 1945, Serial No. 604,951 1 Claim. (01. 78-47) (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) This invention relates in general to a new tool and in particular to a caulking tool.

In many construction operations it is found necessary to perform a caulking operation on two sides of a strip of material. The common practice in such a case is to caulk one side of the strip and then in a separate operation to caulk the other side. This naturally results in a waste of time and also sometimes results in an imperfect caulking job.

It is an object of this invention to provide a new caulking tool to caulk simultaneously a plurality of strips in one operation.

Further objects and advantages of this invention, as well as its construction, arrangement and operation, will be apparent from the following description and claim in connection with the accompanying drawings, in which:

Fig. l is a front elevation of the new caulking tool in an operating position.

Fig. 2 is a side elevation of the head of the tool shown in Fig. 1, taken along line 22.

A dual caulking tool H is positioned for a caulking operation upon a workpiece generally designated I2 that comprises a fiat plate l3 hav ing relatively narrow strips 14 mounted thereon.

The tool ll comprises a shaft or handle l5 tapered at one end to a head l6. Projecting from the head it and preferably an integral part of the head are a pair of caulking lips ii that are preferably rounded at the corners.

The lower surface of each of these lips I! is characterized by being tapered partially to an edge and by having a flattened tip I8 at the lower extremity. Between the lips I! there is a rectangular groove 19 which is adapted to receive comparatively snugly the strip I 4 that is to be caulked to plate I3.

In the use and operation, the new caulking tool is placed on the workpiece I 2 as shown in Figure l with strip M projecting into g-roove l9 and with lips ll of the tool straddling the strip l4 and bearing against the surface of the plate 13. A conventional caulking operation is carried out except that the caulking operation is performed simultaneously on each side of the strip 14 and a perfect caulking job is simultaneously obtained on each side of the strip. The pressure of the caulking tool on each side of the strip I4 provides a supporting force to coact with the caulking force on the opposite side of this strip. Because of this supporting force it is thereby possible to obtain a good caulking job on a comparatively loosely mounted strip whereas in the use of a conventional single caulking tool there is a tendency for the strip to be pushed to one side during the caulking operation.

By the use of this tool it is also possible to mount a strip loosely upon the surface of a crosspiece and to guide the strip into its correct position with the same tool that performs the actual caulking operation, thus eliminatingthe necessity for a frequently complicating system of wedges, braces, and other supports.

It is to be understood that various modifications and changes may be made in this invention without departing from the spiri and scope thereof as set forth in the appended claim.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

What is claimed is:

A caulking hand tool formed of a single piece only of bar-shaped material, said tool throughout the major portion of its length being of uniform cross section and forming a handle, said tool at one end being axially slotted to form a pair of spaced lips, said lips having substantially parallel opposed internal surfaces and tapered external surfaces forming each lip into a wedge shape, said lips being flattened along their edges, said edges being of convex semicircular shape of a diameter substantially equal to the diameter of the handle.

EDMUND A. RANDALL. VERNON B. SLIFER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 329,713 Caldwell Nov 3, 1885 687,464 Sullivan Nov. 26, 1901 966,719 Thompson Aug. 9, 1910 986,166 Haas Mar. 7, 1911 1,424,178 Noyes Aug. 1, 1922 1,488,834 Robbins Apr. 1, 1924 1,719,311 Sargent July 2 1929 1,720,318 Chisholm July 9, 1929 1,769,787 Kehoe July 1, 1930 2,004,387 Dewald June 11, 1935 FOREIGN PATENTS Number Country Date 403,734 Great Britain Jan. 4, 1934 

